Implement autosuggest for search bar

Implement autosuggest feature for the Integrated search bar. The suggestion should suggest:

• Terms / phrases, like Google this --> starts a search on the term when chosen (I'm not sure if the Solr config needs a change for this)

• Titles of content items --> goes to the content item when chosen

CSS/JS has already been made, but this Integrated layout, so I'm not sure if it can be used (Resources/public/js/base.js in the attachment)

J-San already did some investigation on this issue. Using shingles is the best way.